Telltale for compasses or the like.



' J. L. HALL. TELLTALE FOROOMPASSBS OR THE LIKE.

v APPLICATION FILED JAN. 7, 1911.

1,091,653. Patented Mar. 31, 1914,

Fig.1. g4 g7 Witnesses: 0 Inventor c/ :2 John L. Hall ZZZ, r Hisfittorne g.

' zen of the United States,residing one or more I 1 'cotiyenient meansof causing the auxiliary indlcatorto move. simultaneously with the 80 mtj xn h, .t the' mla1n, 1nd1cator 1s] nstantly commum j an may belocated at any tance from, the main oom' assv. oi-etc 1' which may be ash ps compass havil a suitable dial marked' n the usual way. iv ,"otedconcentrically'with the needle is a com 80' one on each side offtheneedle T ese contacts 12 andf13 are for closlng a circuit I To mayaoi'wm one of the; objects of my invention being to M f invention isparticularly applicable to magiieticcompassessuch ratedto the auxiliaryindicator. Any numas L, HALL, or mum, in:

:l. I I 1 091,653.: I

Animation-nee January 7,

L. HALL, a citia S new? county of Schenectady, State of New ork, haveinvented certain new and l ilp lv' vementsfin Telltales for Comof whichthe following is.

Be it known that I,' 01in a 'fi atipnzl s in en ion r tes t d i P r.ratus such asmagnetic compasses or t e ike,

provide incanswhereb an auiiliary indic ter??- t al ay li l a a a pointremote the main indicator and 'vethe "e indications as are given by t eindi as ships compasses in whichj'it is desirable that the movements ofthe compass be indicated in various parts ofthe s hip. v J a" IIncarryi'ngoutmy invention I provide in connection the main compassneedle a i l lary indicators er tell-tales electrical connectionsbetweenthe two' wh reby ithe auxiliary indicator moves to and " (ind. With themain indicator. -"'A.S a

main employ a synchronous niotor conhected with the mam indicator inthat avery' 'slight movement of Y ht' t is-Je wi y indi ii s of -ta belocated at various parts'of the ship reasonable dis-l In tlidaccoinpanying' rawing in which I have shown-iny inventionembodied' inconiorin, Figurel isa complete view of on'e'fonn of my apparatus; andFig. 2 is a detail of the circuit connections with the ma"eticneedle.

eferring'to the'drawin'gs, 1-0 represents the ma'gnetrcneedle of anordinary compass,

tact memberll having'contacts 1 and 13, 1

w 203x, a'ssxcuon 'ro comm, A conromrroN-or mew roan.

Specification of Letters Ilatent.

'tated by '36engage the inner surface of these 36 are rotated, therebyene Ion coinmssns bi mm Patented its; i, iii;

1911. Serial m3. comes.

through contactors 14 and 15,- battery 16. That is, when the coutactonthe compass needle engages the 'stud-'12, co '11 tactor'ld will beenergizedand when the stud 13 1s engaged contactor. 15 will Keenergized.The member 11 is arranged t'o 'ro'- means of a worm wheel 17 engaged byfvgofm 18 mounted on shafiifllh9; This s a v 9 is driven in onedirection or the other bymeans of a motor 20 which is constantlyrunning. Two magnetic clutches .21

and 22 are provided, controlled respectivel by the contactors being suchthat ergized the magnetic clutch21' willbe ac 15'and 14, the arrangemenwhen the contact0r 15i en cordingly'niagnetized to cause the shaft torotate in one direction, while if the con tactor 14 is energizedth'e'clutch '22 'will be magnetized and v the opposite direction.

cause the shaft to i' otatein At 23 I have shown an auxiliary i ortell-tale consisting of apointer of erated through worm 24 on'shaft25.This s aft 25 is operated by the synchronous motor "26 through thebeveled is controlled by the from the shaft 19 by Thisconti'ollerconsists tor rings. '30 and'el connected with the mains A B and an outerstationary ring divided into three insulated 'segm ie wo nn ri lleccoils of the motor. A pair of hrushes 35 ;a;ud

.rm" and-are rotated with ther'ing's 30 and 1 through ring 29. Brush:351 s electricall connecte with ring 31 and brush 36 'wit ring 30. Therotor 37 of the motor is Segai-ately excited across the mains A B.

.rin'g r ismqt I e ra beveled *ge" by brushes t '32, 33' and 34connected with the various this 'arran'gement,the direct current sag y AB isconverted into currents having t phase relation which areconductedto stator of the motor. As theshaft 19 rota es', the slip rings 30 and31- and the brushes 5 and gizin thecoils of the stator so that the rotorwii e movement of the conthe mains A B and the magneticclutches"? e and21. likewise receive current t same source.

i ch is a1, ways of the same olarlty berotated to correspondwith t 7troller. The 'motor 20 is connected across "po'intiwliich forms a pivotwhich dips acontact lated from I The connected with each and 13 byconductors In I have shown a detail of the cirscuit closingcontact ofthe needle. The central 3 8"of;the compass terminates in a for theneedle 10 5 -at.39. Secured to the pivoted post just beproject upwardthroughthe contact member tion it engages onepost,

' line A 13 thereby be turne clockwise direction so as to tell-talesponse to the movement of the contact 11.;- In this way the tell'stalewill be shifted-- around to corres 0nd with the movements it soas torotate the s aft 19 in the move its rotor 37 11 secured to and -movingwith thehub of the gear 17. The contact 41 ward between the osts 12 and13, as shown, so that if the nee e is moved in one direcwhile if it ismoved in the oppos te direction it engages the other Asthus constructedand arranged, the operation will be as follows, assumin that the artsare in theposition shown in Fig. 1 and: that the magnetic needle movesto the right. A very slight movement of the needle brings it intocontact with the post 12, thereby energizing the contactor 14' by meansof the battery 16. The energizing of the contactor 14 causes magneticclutch '22 to be closed across the causing the shaft 19' to in onedirection by the motor. The connections are such that when the post 12is engaged, the shaft 19 will be rotated in a direction to rotate .themember 11 in a move the contact 12 away from the needle. At the sametime the controller 28 has likewise been moved by the shaft 19 acorresponding amount so that the motor 26 is so energlzed as to p a;corresponding amount. The rotor in turn rotates the tell tale 23. Iftheneedle' passes still fartherto the right the post will again beengaged, and the will'be moved another step in-reof the needle. f theneedle moves in the opposite direction the post 13 will. be engaged,thereby ener 'zing the contactor 15 op osite direction. will cause thecontrofier to rotate in the opposite direction and cause the rotor ofthe synchronous motor 26 and the tell-tale to be oppositely rotated in amanner well understood. I

By the arrangement described it will be seen that I am able to locateany number of ship 41 secured to but insu- 46 and 47 These postsprojects downcator, a motor for driving the circuit of the member toneedle,

.ing contacts cooperati electromagnetic means a motor operated by dle ofa compass, of

-motor operated indicators or tell-tales invarious parts or a and at.any time these tell-tales will give the exact indicationof the maincoma small synchronous motor, an number of which may be connected .witht e controller 28. In the construction shown the motor 20 rotatescontinuously, although of course my invention is in no sense limitedtot-his nor to any other specific arran ement nor to an of the otherstructural estures except 111 so far as it is limited by the scope ofthe claims annexed hereto.

What I claim as new and desire to secure ,by 'Letters Patent -of the'United States,

' pass needle. Each tell-tale is provided with 1. The comb1nat1on with amagnetic neefor causing said member to oll'ow the movements of said.needle, an auxiliary md1- and a. controller for said motor operated bysaid electromagnetic means 2. The combination with the magnetic nee-.dle of a compass, of

acontagt member'cooperating therewith, means for causin sa d member tofollow the movements 0 said .dleof 'a compass, of a contactmembercooperating therewith, electromagnetic means said indicator,

needle, an auxiliary indicator, a synehro-.

nous motor, and means whereby said mdicator is automatically moved bysaid motor to correspond to the movements of said'contact member.

3. The combination with the magnetic needle of a compass, of a contactmember cooperating the'rewith, means for caus'in said follow themovementsv 0 said .an auxiliary indicator, a' synchronous motorcontrolling means for said motor, and means for causing s'aidcontactmember and controllin means to be moved simultaneously.

4. T e combinationwith a magnetic needleof a compass, of a contactmember havwith the needle,

5. The combination with a magnetic neeor operating said for operatingsaidindicator,

a. contact member hav;,

ing contacts cooperating with the needle a.

continuousl driyin sai netlc' c utch operating. electric motor or 7'controlledby said contacts .for controllin the connections betweentheme-- tor and t e oonta'ctmembers, an auxiliary. indicator, anelectric motor for dnving-said mdicator, and a controller for said;atterby said mentioned mo tor. a

6. The combination'with I needle of a compass, of a, contact m'mber themagnetic. a

contact member, an electroma'gpivoted concentrically therewith andhaving and connections whereby the motor moves contacts cooperating withthe needle, elecin synchronism with the controller. tromagnetic meanscontrolled by said con- In witness whereof, I have hereunto set tactsfor movin the contact member out of my hand this 6th day of January,1911. engagement wit' the needle, an auxiliary JOHN L. HALL.

indicator, a synchronousmotor for drivin Witnesses: said indicator, :1clrcuit controller for sai BENJAMIN B. HULL, motor driyen by theelectromagnetic means, HELEN ORFORD.

